Electronic calculator with dynamic recirculating storage register

Claim 1

A DYNAMIC RECIRCULATING STORAGE REGISTER FOR SERIALLY RECEIVING DURING AN INITIAL ENTRY PASS, THE MULTI-BIT DIGITS OF A MULTI-DIGIT OPERAND NUMBER OF DIGIT RADIX GREATER THAN TWO, AND FOR RECIRCULATING THE SAME IN SUBSEQUENT NORMAL, NON-SHIFTING RECIRCULATION PASSES AND IN SHIFTING RECIRCULATION PASSES, SAID REGISTER HAVING AT LEAST ONE SHIFT COUNT DIGIT POSITION INTERMEDIATE THE POSITIONS OF THE EXTREMELY SIGNIFICANT DIGITS OF SAID OPERAND NUMBER, NAMELY, ITS LEAST AND MOST SIGNIFICANT DIGITS, AND COMPRISING: (A) PRINCIPAL DYNAMIC STORAGE MEANS, (B) READ-IN AND READ-OUT MEANS FOR RESPECTIVELY READING IN AND OUT OF THE STORAGE MEANS SERIALLY THE OPERAND NUMBER AND SHIFT COUNT DIGITS, (C) AN INITIAL ENTRY PATH INCLUDING A TRANSITORY STORAGE REGISTER HAVING A MINIMUM CAPACITY OF ESSENTIALLY ONE DIGIT, A UNIT VALUE CHANGER, AND SAID READ-IN-MEANS, (D) A NORMAL RECIRCULATION PATH INCLUDING SAID READ-OUT MEANS SAID TRANSISTORY STORAGE REGISTER, SAID UNIT VALUE CHANGER, AND SAID READ-IN MEANS, (E) A SHIFTING PATH HAVING A TRANSISTORY TIME THAT DIFFERS FROM THAT OF THE NORMAL RECIRCULATION PATH BY ONE DIGIT TIME, AND INCLUDING SAID READ-OUT MEANS, NORMALLY BLOCKED SHIFT GATING MEANS, AND SAID READ-IN MEANS, (F) MEANS FOR ENABLING SAID UNIT VALUE CHANGER TO ALTER BY ONE THE VALUE OF THE OPERAND NUMBER DIGIT IN ONE OF THE EXTREMELY SIGNIFICANT DIGIT POSITIONS DURING RECIRCULATION PASSES, (G) DECODING MEANS FOR EXAMINING THE CONTENTS OF SAID TRANSITORY STORAGE REGISTER, (H) A "SHIFT IN THE NEXT PASS" SIGNAL GENERATING MEANS RESPONSIVE TO SAID DECORDING MEANS SENSING A PREDETERMINED VALUE FOR THE DIGIT WHICH DURING THE CURRENT PASS REACHES SAID READ-IN MEANS IN THE POSITION OF SAID ONE EXTREMELY SIGNIFICANT POSITION, NAMELY DURING THE INITIAL ENTRY PASS AND DURING A SHIFTING PASS A FIRST PREDETERMINED VALUE, AND A SECOND VALUE DIFFERING FROM THE LATTER BY ONE DURING A NORMAL RECIRCULATION PASS, (1) MEANS RESPONSIVE TO SAID "SHIFT IN THE NEXT PASS" COMMAND SIGNAL TO GENERATE A "SHIFT IN THIS PASS" COMMAND SIGNAL, (J) MEANS ACTIVATED BY THE LATTER COMMAND SIGNAL FOR ENABLING SAID UNIT VALUE CHANGER TO ALTER BY A UNIT THE SHIFT COUNT NUMBER INCOMING IN ITS ORIGINAL POSITION FROM SAID TRANSITORY STORAGE REGISTER TO MAINTAIN THE SHIFT COUNT NUMBER IN ITS ORIGINAL POSITION, FOR EFFECTIVELY BLOCKING THE NORMAL RECIRCULATION PATH ONWARD OF SAID TRANSITORY STORAGE REGISTER FOR THE OPERAND NUMBER DIGIT POSITIONS, AND FOR UNBLOCKING SAID SHIFT GATING MEANS TO OPEN AND SHIFT PATH TO EFFECT POSITIONAL SHIFT OF THE OPERAND NUMBER DIGITS, (K) AND CIRCUIT MEANS RESPONSIVE TO COINCIDENCE OF SAID DECODING MEANS REFLECTING A PREDETERMINED SHIFT COUNT VALUE AND OF A "SHIFT IN THE NEXT PASS" COMMAND SIGNAL FOR GENERATING A TERMINATING SIGNAL EFFECTIVE TO DISABLE IN ANY SUBSEQUENT PASS, GENERATION OF THE LATTER COMMAND SIGNAL.